<div id="login">
    <form action="<?php echo url_for('@sf_guard_signin') ?>" method="post">
    <?php echo $form['_csrf_token']->render() ?>
        <?php if ($form['username']->hasError()): ?>
            <p class="login-error">Identifiant et/ou mot de passe incorrect</p>
        <?php endif; ?>
        <p>
            Identifiant
        <?php echo $form['username']->render(array('class' => 'big-input')) ?>
      </p>
      <p>
            Mot de passe
        <?php echo $form['password']->render(array('class' => 'big-input')) ?>
      </p>
    <p>
      <?php echo $form['remember']->render() ?> Se souvenir de moi
    </p>
      <p class="submit">
            <input type="submit" value="Se connecter" />
      </p>
    </form>
</div>